java 如何在 JSF 模板中定义一个将在别处定义的 onLoad 函数

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时间:2020-10-29 20:50:42  来源:igfitidea点击:

How to define an onLoad function in JSF template that will be defined elsewhere

javajspjsffacelets

提问by purecharger

I'm designing the view for my site, which has a standard login and landing page, and I want to have an onLoad function called for my login page, but not for my other pages (yet). I've got a template.xhtml file, which has this insert:

我正在为我的网站设计视图,它有一个标准的登录和登录页面,我想为我的登录页面调用一个 onLoad 函数,但不是我的其他页面(还)。我有一个 template.xhtml 文件,其中包含以下内容:

<div id="content"> <ui:insert name="content"/> </div>

<div id="content"> <ui:insert name="content"/> </div>

Then in login.xhtml I have:

然后在 login.xhtml 我有:

<ui:define name="content"> ... </ui:define>

<ui:define name="content"> ... </ui:define>

Normally I would put this in login.xhtml:

通常我会把它放在 login.xhtml 中:

<body onload="document.getElementById('login_form:name').focus();">

<body onload="document.getElementById('login_form:name').focus();">

But since I'm using JSF's ui composition tags, I can't have the <body/>tag in login.xhtml (at least the way I am attempting to do it).

但是由于我使用的是 JSF 的 ui 组合标签,所以我不能<body/>在 login.xhtml 中使用该标签(至少我尝试这样做的方式是这样)。

Is there a way to accomplish this with the structure I've described? The way I would think of doing it is to have onLoad call a function in the template, and then each page with ui:define would populate this function. Is that possible?

有没有办法用我描述的结构来完成这个?我想这样做的方法是让 onLoad 调用模板中的一个函数,然后每个带有 ui:define 的页面都会填充这个函数。那可能吗?

Thanks!

谢谢!

回答by Bozho

I can think of at least two ways:

我至少可以想到两种方法:

  1. define the header section with <ui:define name="header">, and put a javascript function (function bodyLoaded(){..}) in it - different on every page, and then reference it via <body onload="bodyLoaded();">

  2. use facelets params. I.e. <body onload="#{onLoadJS}"/>and on each page including the template use <ui:param name="onLoadJS" value="document.getElementById(..)" />

  1. 使用 定义标题部分<ui:define name="header">,并在其中放置一个 javascript 函数 ( function bodyLoaded(){..}) - 每个页面都不同,然后通过<body onload="bodyLoaded();">

  2. 使用 facelets 参数。即<body onload="#{onLoadJS}"/>和在每个页面上,包括模板使用<ui:param name="onLoadJS" value="document.getElementById(..)" />